The augmented matrix of a consistent system of five equa- tions in seven unknowns has rank equal to three. How many parameters are needed to specify all solutions?

Answers

Answer 1

Answer:

Answer:

It is necessary four parameters.

Step-by-step explanation:

Since the augmented matrix of the consistent system has rank equal to three then the number of free variables is (number of unknows)-rank then there are 7-3=4 free variables. This means that are necessary four parameter to specify all solutions.

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A new company is in the process of evaluating its customer service. The company offers two types of sales: (1) Internet sales and (2) store sales. The marketing research manager believes that the Internet sales are more than 10 percent higher than store sales. The alternative hypothesis for this problem would be stated as:

Answers

Therefore the correct answer is for the alternative hypothesis is,

$H_1:P_(internet)-P_(store)\leq0.10$

Null Hypothesis:

A null hypothesis is a theory that assumes there is no statistical importance between the two variables in the hypothesis.

Let $P_(internet)$ be the proportion of the internet sales and $P_(store)$ be the proportion of the store sales.

The researchers claim is that ''the internet sales are more than 10% higher than store sales''.

The alternative hypothesis is,

$H_1:P_(internet)-P_(store)\leq0.10$

The opposite of alternative hypothesis is,

$H_0:P_(internet)-P_(store)\leq0.10$

It can be observed that the alternative hypothesis contains greater than a symbol.

Learn more about the topic Null Hypothesis:

brainly.com/question/19132215

Answer:

$H_A: P_{\text{Internet}}-P_{\text{Store}} > 0.10$

Step-by-step explanation:

We are given the following in the question:

Let $P_{\text{Internet}}$ be the proportion of the internet sales and $P_{\text{Store}}$ be the proportion of the store sale.

Hypothesis:

We have to conduct a hypothesis to check that the Internet sales are more than 10 percent higher than store sales.

Thus, we can design the null and alternative hypothesis as:

$H_(0): P_{\text{Internet}}-P_{\text{Store}}\leq 0.10\nH_A: P_{\text{Internet}}-P_{\text{Store}} > 0.10$

Alternate Hypothesis:

The alternate hypothesis states that the proportion of the internet sales is greater than the proportion of store sales by 10 percent.

What is (0.4) exponential form?

Answers

Answer:

it would be 0.4 to the power (exponent) of 3

Step-by-step explanation:

should the answer be 0.4^3

(hope this helps can i plz have brainlist :D hehe)

10x-4=-4+10x

One Solution, No Solution, Infinitely Many Solutions

Answers

Answer: Infinitely Many Solutions

Step-by-step explanation:

Let’s simplify the equation:

$10x-4=-4+10x$ (add 4 to both sides)

$10x=10x$ (divide by 10 on both sides)

$x=x$

Because $x=x$ , $x$ has an infinite amount of solutions.

Note: You could rearrange the equation from the beginning: $10x-4=10x-4$ . This allows you to reach the conclusion that $x$ has infinitely many solutions before solving for $x$ .

Anyone know this I’m stuck

Answers

I'm pretty sure it's..... B

Answer:

B.) 6^6

Step-by-step explanation:

6^9 ÷ 6³

= 6^9 × 6^-3

= 6^9-3

= 6^6

=46656

Which point represents the value of –(–2) on the number line?

Answers

Answer:

Step-by-step explanation:

2 minus signs multiplied together give a plus. The number line I'm using does not have any y values.

Answer:

-2

Step-by-step explanation:

A cookie recipe called for 2 4⁄6 cups of sugar for every 2⁄3 cup of flour. If you made a batch of cookies using 1 cup of flour, how many cups of sugar would you need?

Answers

Turn 2 4/6 into an improper fraction
16/6
To turn 2/3 into 1 cup, multiply my 3/2 for both the flour and sugar.
1 cup flour = 3/2(16/6)
1=48/12
Reduce
1 cup flour = 4 cups sugar.

Hope it helps! I can provide image if needed

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Which equation represents an inequality in the system of inequalities shown in the graph? Which point is a solution to the system?Which equation represents an inequality in the system of inequalities shown in the graph? Which point is a solution to the system?

Pls help, and don’t give random answers just so you can have points.

Jane will rent a car for the weekend. She can choose one of two plans. The first plan has no initial fee but costs $0.80 per mile driven.The second plan has an initial fee of $70 and costs an additional $0.30 per mile driven. How many miles would Jane need to drive forthe two plans to cost the same?